Chapter 1
Cloud Architecture
Course: Comptia Cloud Cv0 004
Subject: Comptia Cloud Cv0004
Chapter: Cloud Architecture
1. Billing Models
Cloud providers offer multiple billing models designed to accommodate diverse workload patterns, budget strategies, and operational requirements. Understanding these models helps organizations optimize costs and performance.
a. Dedicated Host
Definition: A Dedicated Host is a physical server allocated exclusively to a single customer, running multiple VMs or containers. Unlike shared tenancy, the entire hardware is reserved, providing isolation at the physical level.
Purpose:
- Isolation & Compliance: Ideal for workloads subject to strict regulatory standards (e.g., HIPAA, PCI-DSS) that forbid shared infrastructure.
- Predictable Performance: Hardware resources are not shared, avoiding noisy neighbor issues common in multi-tenant environments.
- Licensing Flexibility: Some software licenses are bound to physical cores; Dedicated Hosts enable compliance with these license terms.
Cost Characteristics:
- Typically involves higher upfront or ongoing charges compared to multi-tenant instances because you pay for the entire physical server.
- Billing usually occurs at the host level regardless of VM usage or utilization efficiency.
- Offers predictable monthly costs which aids budgeting in enterprise environments.